Name: H950C07 Tungsten Collet (3.2mm) | OTC TIG Welding Torch Collet
Brand: OTC DAIHEN
SKU: H950C07

OTC Daihen Genuine TIG Torch Tungsten Collet H950C07 (For 3.2mm)

H950C07 is an official OEM genuine tungsten collet custom-engineered by OTC Daihen for heavy-duty TIG welding applications using 3.2mm large-diameter tungsten electrodes. Serving as the primary mechanical clamp and electrical current conductor for the electrode, this collet is precision-slotted from high-purity, annealing-resistant copper alloy. It maintains exceptional physical spring retention at elevated temperatures, gripping 3.2mm electrodes tightly across all four quadrants to ensure 100% electrical contact. Re-equipping your torch with an original H950C07 collet eliminates tungsten electrode slipping, localized arcing inside the torch head, and erratic arc jumping.

OTC Daihen Genuine Tungsten Collet H950C07 Front View — Figure 1: Overall View of Genuine OTC 3.2mm TIG Torch Tungsten Collet H950C07

⚙️ Technical Specifications

Specification Attribute	Detailed Parameter
OEM Part Number	H950C07
Product Type	TIG Welding Torch Tungsten Collet / Electrode Holder
Applicable Tungsten Diameter	Φ 3.2 mm dedicated size (Large-diameter tungsten)
Compatible Models	Widely compatible with OTC High-Amperage Water/Air-Cooled TIG Torches
Material & Processing	High-elasticity annealing-resistant copper alloy + 4-slot CNC milling
Quality Guarantee	100% genuine OEM copper consumable; high retention & zero slipping

OTC Tungsten Collet H950C07 Slots — Figure 2: Precision CNC Milled 4-Slot Spring Retaining Details on H950C07

OTC Tungsten Collet H950C07 Bore — Figure 3: Close-Up of Precision Conductive Bore Perfectly Matched to 3.2mm Tungsten Needles

🔧 On-Site TIG Torch Assembly & Collet Maintenance Guide (Essential Reading)

Never Use Pliers to Tighten Back Caps: Collets clamp tungsten needles when compressed into collet bodies by the back cap. Never tighten back caps with pliers! Extreme crushing force fractures the slotted copper fingers on H950C07, destroying its elasticity and causing tungsten slippage during welding.
Prevent Oxide Contamination: Insufficient post-flow argon time oxidizes hot tungsten needles black. Inserting oxidized needles into collets deposits non-conductive oxide film inside the bore, causing hard arc starting, contact arcing, and torch head overheating. Clean collet bores regularly with fine sandpaper.
Strict Diameter Matching: H950C07 is dedicated to 3.2mm tungsten. Never clamp smaller 2.4mm electrodes inside 3.2mm collets; doing so crushes and permanently deforms collet fingers.
Replace Mated Collet Bodies: When collet tips show step-wear or arcing pitting, replace the mating collet body simultaneously to maintain maximum electrical conductivity.